From mboxrd@z Thu Jan  1 00:00:00 1970
From: tytso@mit.edu
Subject: Re: [PATCH] resize: check s_log_groups_per_flex before accessing
 flex groups
Date: Sat, 3 Apr 2010 22:17:36 -0400
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Cc: ext4 development <linux-ext4@vger.kernel.org>,
	Alessandro Polverini <alex@nibbles.it>,
	Christoph Biedl <bugzilla.kernel.bpeb@manchmal.in-ulm.de>
To: Eric Sandeen <sandeen@redhat.com>
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On Sat, Mar 27, 2010 at 02:32:16PM -0500, Eric Sandeen wrote:
> This is for kernel.org bug:
> 
> #13549, Kernel oops while online resizing of an ext4 filesystem
> 
> if groups_per_flex < 2, sbi->s_flex_groups[] doesn't get filled out,
> and every other access to this first tests s_log_groups_per_flex;
> same thing needs to happen in resize or we'll wander off into
> a null pointer.

Added to the ext4 patch queue, thanks.

				- Ted